Conveyer of the belt type



Aug. 29, 1933. J. THOMSON CONVEYER OF THE BELT TYPE Filed Aug. 20, 19325 Sheets-Sheet 1 Aug. 29, 1933. J. THOMSON GONVEYER OF THE BELT TYPE 5Sheets-Sheet 3 Filed Aug. 20, 1932 In venZIo Patented Aug. 29, 1933UNITED STATES 1,925,014 OONVEYER OF THE BELT TYPE James Thomson, MileEnd, Glasgow, Scotland, assignor to Mayor & Ceulson Limited, Glasgow, 1

Scotland Application August 20, 1932, Serial No. 629,731, and in GreatBritainOctober 9, 1931 Claims.

This invention relates toconveyers of the class in which a single run ofbelting operable between two positions is adapted, while installed, tobe readily varied in length, and which conveyers may 5 be described ascharacterized by a single upper belt run extending between receivinganddelivery ends with provision for varying the distance therebetween and alower belt run of loop character capable of length variation.

In order to protect the return or lower-run of the belting, as such aconveyer is extended, it will be obvious that additional roofing in theform of inverted troughing must be made use of if that is the kindemployed, and the present invention consists in arranging for the readyextension and protection of a conveyer of the kind referred to.

To this end, assuming the invention to be applied to the mining of coal,the material is delivered direct to a belt conveyer by face conveyersand a number of inverted troughs are made to overlap each other, theoverlap being substantially complete so that initially they may beregarded as telescoped. However, as an addir tional length of belt isbrought into use and the receiving end of the conveyer is advanced tofollow the coal face, one or more of the trough sections can be pulledforward to cover the lower run of the belt.

In the accompanying drawings:

Figs. 1, 1 and 1 collectively show in side elevation the principal partsof a conveyer embodying the present invention;

Figs. 2, 2 and 2 collectively represent a corre-- sponding plan view ofthe conveyer;

Fig. 3 is a transverse section corresponding to an end view of Fig. 4;and.

Fig. 4 is a sectional side elevation of a portion of Fig. 1 drawn to alarger scale.

In the illustrative construction, 1 (see Figs. 1 and 1 indicates theupper run of a belt brought to trough-like shape by angularly arrangedr011- ers 3 (see Fig. l) is theguide drum at the receiving end, and i(see Fig. 1) is the guide drum at the delivery end. From the drum 4, thebelt (1) passes first to a drum 5 and thence to a drum 6, ultimately reurning from the latter to the guide drum 3.

With this arrangement, which however forms 50 no part of the presentinvention, it will be understood that by altering the distance betweenthe drums 5 and 6, the distance separating drums 3 and 4 can also bealtered to vary the length of the conveyer. Thus, by bringing the drum 6nearer to the drum 5, the drum 3 at the receiving end of the conveyercan be moved further away, i.-e., to the right, to lengthen theconveyer. I

The lower run '7 of the belt is protected by troughing 8 (see Figs. 1and l which carries the rollers 2. In accordance with the presentinvention, this troughing as shown in Fig. 1 is given an overlap betweensled carriage supports 9 and 10 and between like carriage supports 19and 11. Extending from the carriage 9 is an inverted trough length 12,carrying a set of rollers 2 for the upper belt run and providedinteriorly at its remote end. with a strap 13 (see Fig. 3) having anglefeet 14 which serve to support said length (12). Upon'this trough length(12) is another trough 15, carrying two sets of rollers 2 forthe upperbelt run, said another trough (15) extending from the carriage 10.

The set of rollers 2 carried by the trough l2 is mounted upon a saddlestrap 17 (see Fig. 4) and blocks 18 are mounted on said trough (12) nearits other end. Similar blocks 19 are mounted upon the underside of theupper trough l5 and are adapted, prior to extending the conveyer,

to engage the strap 1'? which therefore acts as a stopper. When theconveyer is extended, the blocks 19 will engage the blocks 18 whichtherefore act as another stopper to limit the movement in oppositedirection. In cross section, the trough 15 is of course wider than thetrough 12. In order to guide the two troughs during movement, theunderside of trough 15 is fitted with two runners 20 (see Figs. 3 and 4)of an L section shape, while the top side oi trough 12 is fitted with arunner 21 of T section shape to coact therewith.

Between the carriages 10 and 11 are arranged two similar troughs 22 and23, the trough 22 extending from the carriage 10 being like orcorresponding to the trough l5, and the trough 23 extending from thecarriage 11 being like or corresponding to the trough 12. In use, thelower trough 23 is moved to the right so that it slides under trough 22,whereupon the two troughs move together, taking with them the carriage10.

The manner of this movement will be obvious from the above explanationwith the added statement that the trough 15 moves or slides over thetrough 12 until the stopper 19 engages the stopper 18 and the troughs 22and 23 work similarly against corresponding stoppers.

It will be understood that the foreg'oing'is only one example ofconstruction according to the invention and that the number and lengthof overlapping trough sections may be varied to suit differentrequirements.

verted trough sections carrying a series of rollers supporting the upperrun of the belt thereabove and shielding the lower run of the belttrained thereunder; said sections being connected in telescopicalrelation for slide movement one upon another and having means includingpart of the support roller mountings thereon for limiting such movementtherebetween in opposite directions.- 1 2. In a conveyer of the belttype, a series of inverted trough sections carrying a series of beltsupporting rollers and shielding the lower run of the belt trainedthereunder; said sections being supported on sled carriages andconnected end to end with each other in a telescopical slide relationpermitting them to be drawn inward and outward in variably adjustableextension; and having means including part of the support rollermountings for limiting the slide movement therebetween' in oppositedirections. v

3. Ina conveyer of the belt type, a plurality of inverted troughsections connected one with another-in telescopical slide relation andcarrying belt supporting rollers for the upper run of the belt andprotecting the lower run of the belt trainedthereunder; one of; eachadjacent pair of the sections having at one end an internal strapwithlfeet serving as amount for, the belt roller support and at theother end an external strap, and the other of each adjacent pair of thesections having, a stopper on its-underside; theexternal strap of-theone being adapted to engage the stopper of the otherto limit relativemovement between the two in one-direction.

4. In a conveyer of the belt type, a pair of inverted trough sectionscarrying belt supporting rollers for: the upper run of the beltconnected in telescopical slide relation and protecting the lower run ofthe belt, one of said pair having at one end an internal strap with feetserving as a mount for the roller support and also an external stopper,and at the other end an external strap, serving likewise as a stopper;the other of said pair having a stopper on its underside adapted toengage thestopper of the first one to limit relative movement betweenthe two in one direction and to engage the external strap of said firstone to limit relative movement between the two inrthe oppositedirection.

5. In a conveyer of the belt type adapted to elongation or adjustableextension between two points, a pair of inverted trough sectionstelescopically-connected or overlapped to slide upon each other andsupported upon sled carriages; each of said sections-carrying a seriesof belt supporting rollers and the two being jointly adapted to protector shield-the lower run of the belt trained thereunder; one of thesections having an internal strap at one endiadapted to bear against anexternal strap on the end of the other and against one of the supportroller mountings of said other for limiting the extent of slide movementbetween the two in opposite directions,

together with means-preventing separation of the two parts.-

, JAMES THOMSON.

